Extension Socket

Extension Cable Roll

An extension cord essentially is a bundle of insulated electrical wires with a plug on each end. Electrical current flowing through wires generates heat, and when too much current flows through a wire, it can overheat and melt the plastic insulation of the wires, causing short circuits and fires.

The primary function of an extension cord is electrical, and it is to extend a cord in order to power a device that does not reach an outlet.